Re: Kernel oops adding bitmap

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Btw, was interested in, where bitmap will be placed when adding it on
live array? I.e. as it requires some diskspace, we should provide some
free space, but where it can be taken from if array is already created
and used by, say filesystem?

On Tue, Mar 20, 2012 at 1:40 AM, Larkin Lowrey
<llowrey@xxxxxxxxxxxxxxxxx> wrote:
> On 3/19/2012 4:32 PM, NeilBrown wrote:
>> On Mon, 19 Mar 2012 11:44:45 -0500 Larkin Lowrey
> <llowrey@xxxxxxxxxxxxxxxxx>
>> wrote:
>>
>>> The following command oopsed.
>>>
>>> mdadm -G --bitmap=internal /dev/md0
>>>
>>> The array is a two disk raid1 and hosts the root filesystem.
>>>
>>> Is it not possible/allowed to add a bitmap to an active/mounted array?
>>
>> It is. But it is busted.
>>
>> Either use an older mdadm (3.2.2 or earlier), or apply this patch
>>
>> http://neil.brown.name/git?p=md;a=commitdiff;h=4474ca42e2577563a919fd3ed782e2ec55bf11a2
>>
>> which has been sent to Linus already and should appear in -stable
> kernels in
>> a couple of weeks.
>>
>> NeilBrown
>
> Thank you for the explanation.
>
> --Larkin
>
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